Orient Display AMC0802BR-B-B6WTDW-I2C

This LCD display module has a built-in LSI controller containing two 8-bit registers: an Instruction Register (IR) and a Data Register (DR). The IR stores instruction codes (such as display clear and cursor move) as well as address information for the Display Data RAM (DDRAM) and Character Generator RAM (CGRAM). The IR can only be written by the MPU. The DR temporarily holds data to be written to or read from DDRAM and CGRAM. When address information is written to the IR, data is transferred from DDRAM or CGRAM into the DR. The Address Counter (AC) assigns addresses for both DDRAM and CGRAM. The DDRAM stores display data in 8-bit character codes, with an extended capacity of 80×8 bits, or 80 characters. The Character Generator ROM (CGROM) generates 5×8-dot or 5×10-dot character patterns from 8-bit character codes. The Character Generator RAM (CGRAM) allows users to reprogram custom characters — up to eight character patterns for 5×8-dot format, or four character patterns for 5×10-dot format. Character patterns stored in CGRAM can be displayed by writing the corresponding character codes at the addresses shown in the left column of Table 1 into DDRAM.